Adjustable limit gauge



-C. W. LUNDIN ADJUSTABLE LIMIT GAUGE Nov. 6, i923. 1,473,351

Filed July -8. 1921 nnrr CARL W'ILHELM LUNDIN, OF SUNDBYBERG, SVJEDENyASQIGNOR TQ AKTIEBOLAG-ET PRECISIONSMATT, OF SUNDBYBEBG, SWEDEN, A CORPORATION OF SWEDEN.

ADJUSTABLE Application filed July 8,

T0 (ZZZ 10720972 2'25 may concern.

Be it known that I, CARL W ILHELM LUN- DIN, a subject of the King of Sweden, and resident of Esplanaden 15, Sundbyberg, in the Kingdom of Sweden, have invented certain new and useful Improvements in an Adjustable Limit Gauge, of which the following is a specification, reference being had therein to the accompanying drawing.

The present invention relates to an adjustable limit-gauge of the kind in which one of the gauging-members comprises a fiat piece, rectangular in cross-section and adjustable in the body of the limit-gauge, while the other gauging-member comprises two flat pieces, abutting against each other and which together have the same. crossscctional area as the first-named gaugingmember, the outer ends of said members being engaged by set screws. The characteristic features of my invention are that the gauging-members are arranged in forks, and engaged by spacers which latter are also received in said forks and which abut against the outer edges of the respective gaugingmembers, said spacers being provided with conical holes, through which are inserted the conical portions of screws which latter are threaded in the forks and, when tightened, press the spacers against the gauging-members and thereby the latter against the bottom of the slots, whereby the branches of the fork are drawn together.

In the accompanying drawing Figs. 1, 2 and 3 show a limit-gauge according to my invention as viewed from three different sides. AA in Fig 1. Fig. 5 is a plan view of a modified type of gauging member removed.

Referring to the drawing in detail the numeral 1 indicates the body of the limitgauge which at the ends is formed with long and broad forks 2 and 3 open outwards, in one of which is arranged a gauging member 4 and in the other of which is arranged a two-part gauging member 46. The gaugingmember 4 is so long that it can be moved so as to abut against the members 5 and 6 and has a rectangular cross-section and is comparatively broad and thin, so that its end-face presents a long gauging-face. The gauging-member 4 is held in the fork partly by means of a set-screw 7 at the bottom of the slot in the fork and partly by means of a spacer 8, which abuts against the upper or outer edge of the member Fig. 4 is a section across the line.

LIMIT GAUGE.

1921. Serial no. 483,317.

up the outer portion of the slot in the fork. Said spacer is held in position and pressed inwards against the gauging-member 4 by means of conical screws 9, which passthrough one branch of the fork and conical holes in the spacer 8, and which are threaded at their relatively small ends and fitted in the other branch of the fork. By tightening the screw or screws 9'the spacers thus are 4 and forced against the gauging-members and the latter against the bottom of the slot and at the same time, the branches of the fork are drawn together. By loosening-the screws 9 a little the pressure of the spacer 8 and of the fork against the gauging-member 4 is released so that the latter can be moved.

The gauging member can also be held in such a way, as suggested in the modification illustrated in Fig. 5 that a number of re cesses 20 for receiving the'screw or screws 9 are made in the outer edge of the gaugingmember 4*, said recesses being located at fixed distances from each other, for example 2 mm. or 2,5 mm. The screw (or the screws) when being tightened engages the conical recess 20 in the gauging-member whereby the latter is forced down againstthe bottom of the fork and is at the same time prevented from being moved in its longitudinal direction. f

Two gauging members 5 and 6 are mounted in the fork 3 in exactly member 4 is mounted in fork 2 asabove described. The total cross-sectional area of, these gauging-members'ii and 6 is equal to the cross-sectional area of her 4. i In addition set-screws l0 and llare mounted behind the members 5 and 6, respectively. By adjustment of said setthe same way that the opposite memset as desired. 7 e

Having now described my invention, what I claim as new and desire to secure by Let ters Patent is: I

1. An adjustable limit gauge comprising a body having forked extremities, gauging members mounted in the forked extremities of said body, one of said gauging members being rectangular in cross section and adjustably fitted in the forked extremity of the body and the other gaugingmember consisting of two abutting parts, the cross sectional area of the last mentioned two-part gauge member being the same as the cross sectional area of the first gauging member, spacing members fitted in the forked extremities of the body and engaged with the gauging memoers, and screws fitted in said forked extremities having inclined portions acting. when said screws are advanced to frictionally clamp the gauging members in the forked extremities and also acting to draw the branches or" the respective forks together to cause the latter to clamp the gauging members.

2. An adjustable limit gauge as claimed in claim 1 characterized by the provision of a plurality of recesses in the outer edge of 15 the first mentioned gauging member engaging the inclined portion of said screws, said gauging member having the recesses spaced a predetermined distance apart whereby said gauging member may be adjusted longitudinally with respect to the forked extremity of the body and said screws being adapted to tighten whereby the latter act directly upon the gauging member to clamp the latter against the bottom of the "fork and at the time prevent longitudinal movement of said gauging member.

In witness whereof I have hereunto signed my name.

CARL WILHELM LUNDIN. 

